Cash register



Aug. 31, 1943. w. s.v GUBELMANN 2,323,272

' CASH REGISTER Original Fi led Jan. 22, 1929 10 Sheets-Sheet l INVENTOR v WILLIAM S. GUBELMANN ATTORNEYS Aug. 31, 1943. w. s. GUBELMANN 2,328,272

CASH REGISTER Original Filed Jan. 22 1929 10 Sheets-Sheet 2 F/G. Z

' INVENTOR WILLIAM 5, GUBELMANN ATTORNEY Aug. 31, 1943. w, s. GUBELMANN 2,328,272

CASH REGISTER Original Filed Jan. 22, 1929 10 Sheets-Sheet 3 \\\\\\\r@ Ax INVENTOR WILLIAM 5. GUBELMANN a Q fly/L ATTORNEYS Aug. 31, 1943. w. s. GUBELMANN CASH REGISTER Original Filed Jan. 22, 1929 10 Sheets-Sheet 4 CMHIER I MONEY IN 0 Tom anus READ counmws CASHIER TUTAL 5M.

CASHIER l INVENTOR WILLIAM 5. GUBELMANN a ATTORNEYS CASH REGISTER Original Filed Jan. 22, 1929 10 Sheets-Sheet 5 Nmm INVENTOR wlLuArg s. GUB ELMANN fifl ATTO RNEYS 1943- w. s. GUBELMANN 2,328,272

CASH REGISTER Original Filed Jan. 22, 1929 10 Sheets-Sheet 6 FIG. 9

- 522 3Z0LFJ ,1? I! w M 5/3 52! m F/G. /0 7 v H520 g w P v s Q INVENTOR WILLIAM S. GUBELMANN ATTORNEYS Aug. 31, 1943. w. s. GUBELMANN CASH REGISTER Original Filed Jan. 22, 1929 10 sheets-sheet 7 QQQK INVENTOR WILLIAM S. GUBELMANN ATTORNEYS Aug. 31, 1943.

W. S. GUBELMANN CASH REGISTER Original Filed Jan. 22, 1929 10 Sheets-Sheet 9 Nmmw Aug. 31; 1943.

w. s. GUBELMANN CASH REGISTER Original Filed Jan. 22, 1929 10 Sheets-Sheet 1O QNGQ INVENTOR WILLIAM 5. GUBELMANN ATTORNEYS Patented Aug. 31, 1943 William S. Gubelmann, Convent, N. J.

Original application January 22, 1929, Serial No.

' 934,160, now Patent No. 2,226,919, dated December 31, 1940. Divided and this application June 11, 1940, Serial No. 339,953

3 Claims.

This invention relates to cash registers and particularly to indicating mechanism for such machines, this application being a division of applicants application S. N. 334,160 filed January 22,1929, Patent 2,226,919, December 31, 1940.

A primary object of the present invention is to improve the mechanism which is adapted to indicate the various items which are entered; in the machine, as well as the totals'of these items. While the present invention may be employed with various types of cash registers and any other machines in which indication is useful it has been illustrated as applied to the machine forming the illustrative embodiment of the invention of said application S. N. 334,160 to which reference is made for a more complete understanding of the machine as a whole.

It is thus an object of the invention to prov a novel form of indicating mechanism for said and other machines, which may include means for indicating amounts entered into the machine and characters designating the various special keys operated, which for the sake ofexample may represent transactions, departments andclerk It is also capable during totaling operations of indicating the amounts of totals standing on either the totalizers or the item counters, and if the totalizer or counter involved is one directly related to a single special key, the designating I character for that key will also be indicated.

By the use of a very thin form of indicator tablet it has been found possible to provide a very complete indication which is clearly visible from all angles and at a considerable distance. It is rendered comparatively free from excessive casting of shadows without the necessity of moving an entire series of tablets from front to rear of the machine as is frequently required in constructions of the prior art. In accordance with the present invention, it has been found possible to select an indicator for exposure by a relatively small movement of a small slide which is carried by an indicator lifting frame that is in turn connected to the operating mechanism. A feature of the lifting mechanism for exposing selected indicators is the arrangement which sub stantially eliminates the noise usually incident to the dropping of indicators. For this purpose the lifting means holds the indicators elevated when the machineis idle or between operations and it serves to restore them gradually at the beginning of a new operation. The connections from the amount key banks to the small selectin slides carried by the lifting frames are somewhat different from the corresponding connections from the special key banks; the novel features of each will be made apparent from the detailed description to be given hereinafter.

While an attempt has been made in the foregoing to enumerate a number of the outstanding improved and novel features embodied in the indicating mechanism of the present invention, it will be understood that many other features, too numerous to specifically mention at this point, are present and will become more apparent as the description of the illustrative machine pro- 7 gresses.

General outline of illustrative machine In order that the relation between the various parts, which will be described hereinafter in detail, may be more readily understood a general outline will first be given of the component parts of the machine illustrated in the drawings. While this machine serves admirably to illustrate the important features of the invention it will be understood that the specific application of these features herein given is not intended to be restrictive but various modifications may be made to adapt the machine for innumerable other uses.

It has been found convenientfor the purpose of explaining the extreme flexibility in application of the novel features of the invention to disclose them in connection with a machine adapted for use in a large musical instrument store which handles not only a Variety of such instruments but a number of accessory items as well. It will be assumed that such a store is divided into a number of departments which may themselves be assigned to one of two groups as for example an instrument group and a miscellaneous group including accessories or miscellaneous items, such as sheet music, player rolls, phonograph records, and repairs. The instrument group may embrace such departments as piano, wind instrument, stringinstrument,phonograph, and so on.

Each department may have assigned to it a number of clerks although for the sake of avoiding duplication of parts in the disclosure only one clerk will be assumed to be associated with each department. Thestcre may be of such size and conduct its business in such a way that a wide variety of transactions are encountered such as the usual cash, charge, paid out, received on account, and C. O. ,D. transactions. These types of transactions will necessitate extreme flexibility in the printing feature of the machine in order to enable its coordination with a suitable bookkeeping system.

As intimated in the foregoing the present machine is intended to be operated by either of a pair of cashiers who may be responsible for all transactions occurring during their respective terms of duty. Each cashier, furthermore, may be enabled to control certain identifying and totalizing devices related only to himself in such a way as to prevent any one else from using these devices to produce a false or erroneous entry.

In order that instantaneous totals may be obtainable of a wide variety of items a large number of totalizers are provided and these are related not only to the individual keys assigned to the department, clerks and transactions, but are related as well to combinations of these classes. Thus, for the nine departments, nine clerks, and nine transactions, there are provided twenty-seven totalizers arranged in three groups or banks, each containing the nine falling under a particular classification. Each of these groups are shown provided with what may be termed a universal carrying mechanism which has certain parts common to all of the nine totalizers in the group. In addition each of these three banks of totalizers includes a tenth totalizer which is adapted to carry the grand total of the amounts on all of the nine universal type of totalizers in the group, or if desired it may carry some entirely independent total. These grand totalizers are provided with what may be termed individual carrying mechanism since each must be capable of operation without regard to any other totalizer. Those totalizers related to the departments and the clerks are adapted in the present disclosure to accumulate only those transactions which represent actual sales, that is, cash, charge, and C. O. D. items, while the transaction group of totalizers will of course accumulate all items of each particular type of transaction. Since the grand total of the clerk group of totalizers will be the same as the grand total of the department totalizers under the arrangement assumed above only one of the individual totalizers will be used for this purpose. The remaining individual totalizer associated with these groups has, in the illustrative machine, been "assigned to one of the cashiers to accumulate the total sales registered by him. Similarly, the second cashiers sales will be entered upon the individual totalizer of the transaction group, since a grand total of all transactions would be meaningless.

A fourth group of totalizers is provided in the machine and this group is of such construction that as many of the totalizers in the group as desired may be operatedat the same time. Thus istered in each of the twogroups of departments,

the :money taken in by each cashier, :the money paid out by each cashier, and the cashsales registered by each cashier. From these designations it will be seen that .it will not actually be necessary to operate more than two or .at most three of these units upon a single operation of the machine. It will be apparent that the determination as .to whether any one of these totalizers shall be rendered effective upon a particular operation is dependent upon the particular keys operated either in the department or the transaction banks as well as upon the state of the pair of cashiers looks.

A fifth bank of totalizers is further provided for the purpose of handling such combinations of items as may require both addition and subtraction. This bank, as shown, is made to include four totalizers, one of which is devoted to the total cash on hand, while two others are devoted to the cash for which each cashier is to be held responsible, and the fourth is devoted to C. O. D. items in such a way as to indicate at all times the amount of C. O. D business for which collections have not been made. The first of this group of totalizers will be so arranged and operated that it will receive as positive entries all cash, received on account," and C. O. D. paid" amounts, while it will receive as negative or subtractive entries all paid out amounts. The selection of this totalizer for effective operation will therefore be dependent upon the particular transaction key depressed and if this key renders the totalizer effective it must at the same time determine its state, that is as to whether it is to be operated additively or subtractively. Substantially the same mode of control must be provided for the two totaiizers devoted to the cash of the individual cashiers with the additional re quirement that the selection of these totalizers must also be governed by the cashiers looks. The

remaining totalizer of this group will of course be rendered active only when one of the three C. O. D. keys happens to bedepressed. Thus if the ordinary C. O. D. key is depressed this totalizer will be selected for additive operation whereas if the C. O. D. paid key or the goods returned C. O. D. key is depressed the selection of this totalizer will be for subtractive operation. From what has been said it may be noted that as to this fifth bank of totalizers it may be necessary under certain conditions to operate one of them additively and at the same time operate another of them subtractively to the same extent. Thus when a C. O. D. paid amount is reported and registered it must be added to the general cash totalizer as well as to one of the cashiers cash totalizers but it must at the same time be subtracted from the C. O. D. totalizer in order that the latter may represent only outstanding items of this character.

In addition to the foregoing banks of totallzers capable of receiving the variable amounts of the various transactions and some of them either additively or subtractlvely the machine illustrated is provided with some thirty item counters which are arranged in three banks and are adapted to receive only unitary actuation upon operations of the machine. These counters are of substantially the same construction as the totalizers of the first three banks mentioned but, as stated, are adapted to receive only unit actuation upon operations of the machine. Twentysevenc'f these counters are of the universal carry type and are directly related to corresponding ones of the keys in the three special key banks so that upon normal operations three counters will have a unit added to their registrations. The remaining three counters which are of the individual transfer construction are devoted to the counting of the total number of operations performed by each cashier and the counting of the number of sales made by all of the clerks.

From the foregoing brief outline of the general character of the totalizers and item count-ers provided in the machine illustrated herein, it will be foundthat this machine is capable of operating a maximum ofj eighteen totalizers and six item counters upon a single operation of the maand indicate thetotals standing upon one or an other or possibly all of the totalizers either with or without resetting. For this purpose certain lock controlled devices are provided through the adjustment of which it is made possible for an authorized-person to condition the machine for the printing and indicating of totals from any of the totalizers and the returning of the same amounts to the wheels, i. e., sub-totaling, while the same person or another specially delegated party may so condition the machine as to effect the resetting of the tctalizers coincidently with the printing and indicating of totals. Now since there are a large number of totalizers provided in the illustrative machine for which there are no single selecting keys and which are engaged with the actuators under the joint control of a plurality of keys it has been found necessary or desirable to provide a plurality of total printing and indicating controllin levers each of which may be moved to any one of several totaling positions. These levers are normally locked, but when the manager of the store, for example, releases them by the use of a special removable key they may be moved to any desired position. Now for the three banks of what have been termed the universal totalizers, comprising twenty-seven in all, the selection of any one for totaling may be aided by the depression of the corresponding key in one of the three special banks, just as for item entering operations. The invention, therefore, contemplates the movement of one of the totaling levers to a certain position, which is one step removed from the normal adding position, and in which any one of the twenty-seven universal totalizers may be selected for sub-totaling by depression of the related key. A similar arrangement is made possible with respect to the twentyseven item counters having the universal transfor construction, but in order to distinguish between the totalizer and the item counter related to a particular key during total taking there is provided a separate position of the same total lever for item counter totals. This position may. for example, be two steps away from normal. However, this arrangement alone does not take care of the three individual transfer type of totalizers located one in each of the three banks discussed above nor the three individual transfer item counters. Separate positionsof the same total lever are accordingly provided for determining the selection of each of these individual totalizers during totaling. This control is necessarily without the aid of any special keys since no keys correspond directly to these totalizers. Substantially the same construction is provided for that item counter which represents a grand total of the number of all entered. the only difference being that a definite position of the other total lever is provided for this purpose. As for the remaining individual transfer item counters the aid of the cashiers locks may be relied upon to effect a selection so that the total lever first mentioned is merely placed in the second position specified and the appropriate cashiers lock turned.

For the remaining twelve totalizers, namely the bankof eight individual transfer totalizers and the four adding and subtracting totalizers, there must be provided four additional positions for the first mentioned lever, as well as some eight positions other than the normal and total sales counter positions of the second lever. By the arrangement specified it is thus made possible to select for total printing and indicating any one of the forty-two totalizers or of the thirty item counters by the selective movement of one of two levers to one of nine positions away from normal, the selection of certain of the totalizers and counters being aided by the depression of certain keys or the turning of the cashiers looks.

The resetting control is precisely the same for all totalizers and is effected by the mere turning of a lock in addition to the appropriate adjustment of the lever mentioned. Thus, in order to condition the machine for a reset or grand total operation it is necessary that the party operating the machine should have not only the key to unlock the pair of adjustable levers but a special key to turn the resetting control lock.

One feature of the invention which should probably be mentioned at this point is the general mode of operation of the differential mechanism. During normal adding operations this mechanism is entirely positive in its action and is of the type involving complementally movable elements which move in opposite directions until a shoulder on each engages a stop set by the depressed key in the particular bank involved. During totaling operations it has been found desirable to introduce a spring for operating that one of the complemental elements for each bank which is connected at the time through gearing to the totalizer actuator. On operations of this kind it is desired to have the totalizer elements, in being turned back to zero positions, to control the extent of movement of the actuators and hence the complemental elements. For this reason, the special springs are rendered eilective for totaling to insure the movement of the actuators and connected ones of thecomplemental members priorto any movement of the remaining complemental members; in this way the latter will then subsequently be shifted. after the totalizer wheels have reached zero, to take up the balance of the full complement which each pair of members must receive. Since the type carriers and indicating mechanism are therefore positioned under only spring control in totaling, certain precautionary devices have been provided to lock up the machine in the event of anyinterference with the free movement of the type carriers through tampering as by the insertion of a wire.

An important phase of the machine is the provision of suitable machine release and key interlocking devices. The arrangement adopted for purposes of illustration contemplates compelling the operation of a key in of the special key banks as well as the turnin of one of the cashiers looks into active position as an incident to the operation of the machine. Four separate locking arms are therefore provided to normally block the operation of the main shaft. However, when totals are taken frornany of the twenty-seven totalizers of the universal transfer type, or when totaling from the corresponding item counters,'the machine should be releasable by the depression of a single'key. Furthermore, it'should be impossible at such times to depress more than a single key. To this end the movement of-one of the total control levers to the position wherein it predetermineseither of the two conditions mentioned it automatically serves to couple up the four locking arms in such a way that movement of one will cause releasing movement of all four. Again, when the machine is conditioned for taking totals from other totalizers or counters which are not directly related to one of the special keys or a. cashiers lock the machine should be releasable without the need of depressing any key or the turning of either of the cashiers locks. To this end movement of either of the total controlling levers to any position, other than the two above specified, away from normal is adapted to automatically withdraw all of the four locking arms mentioned so that the machine may be operated directly or may be released by a motor bus bar.

In addition to the foregoing machine locking and releasing mechanisms there are provided interlocking means which prevent movement away from normal of more than one of the total control levers at a time; there are also means for preventing depression of more than a single key in any bank and means for compelling proper coordination between the total levers and special keys for all positions of the levers.

The indicating mechanism illustrated is able to exhibit at both the front and rear of the machine the nature and amount of each transaction entered, and this indication is so devised that the figures of the amounts will be displayed in their true denominational sequence when viewed from either front or rear. If desired the indicators may also be used to display totals during totaling operations.

With this brief general outline the features of the machine and particularly the indicating mechanism will now be described in detail with reference to the drawings which accompany and form part of the specification.

In the drawings:

Figure 1 is a perspective view of the entire machine.

Figure 2 is a vertical sectional view thru the machine showing the differential mechanism, the indicators, a bank of universal totalizers, and the cash drawers.

Figure 3 is a side elevation of the machine showing the control mechanism mounted on the left side frame of the machine.

Figure 4 is a vertical sectional view thru an amount key bank showing the complemental slides. This section is taken along the line 4-4 of Figure 2. looking in the direction of the arrows.

Figure 5 is a vertical sectional view taken toward the rear of an amount key bank along the line 55 of Figure 2 and shows the zero stop and complemental slides.

Figure 6 is a plan View of the total controlling levers. with their designating plates, and also showing the reset lever and lock.

Figure 7 is a plan view of the groups of special keys. namely, the transaction, clerk, and department keys.

Figure 8 is a vertical sectional view of a special key bank showing also the selection mechanism operated under control of the special keys.

Figure 9 is adetail view of the rearwardly tensioned centralizing slide for a special key bank.

Figure 10 is a detail view of the forwardly tensioned centralizing slide for a special key bank.

Figure 11 is a detail view of a fixed plate used to guide and strengthen the ends of the special keys.

Figure 12 is a detail view of a positioning slide acted upon by the four rear special keys of a. bank.

Figure 13 is a detail view of a positioning slide acted upon by the five front special keys of a' Figure 19 is a side view of the indicating tablet. v

Figure 20 is a vertical section thru the indicating mechanism.

Figure 21 is a horizontal sectional view thru the indicating mechanism.

Figure 22 is a plan view of the indicator selection mechanism.

Figure 23 is a chart showing graphically the timing of the major functions performed by the machine. I

A casing 26 (Figs. 1,. 2 and 3) is adapted to surround all of the usual frame work as well as the great majority of operative parts includin those which extend beyond the main side frames. Suitable openings are provided in this casing for permitting the indicators to be viewed and permitting the necessary access to various portions of the machine. The casing, Fig. 1, has a hinged cover 21 for normally concealing the parts related to the total levers, covers 28 and 29 for permitting access to the printing mechanism. A drawer 3| may be provided below the printer unit and may be used for filing away installment.

sheets, charge account sheets, or similar slips.

penings are also provided in the casing for the key units and operating handle, as well as for other operative elements which must be accessible from the outside of the machine. A marble slab 32 may be provided on a front shelf of the case for retaining money, sales slips and the like, during the course of operation of the machine.

Operating mechanism The machine illustrated is adapted to be driven by means of a hand crank 33, Fig. 1, although it will be understood that a motor may readil be provided to supply the motive power if desired. In actual use it will no doubt be advisable to employ a motor, since the machine will necessarily require a. fair amount of power for its operation. The crank 33 is suitably connected for driving the main shaft 31 which extends across the entire machine and serves to transmit the power to certain operating parts at intermediate points Keyboard As already been mentioned, the machine disclosed is provided, as best shown in Fig. 1, with a. number of bank of amount keys 42 which are sufficient to set up an amount up to $999,999.99. There are also provided three banks of special keys such as transaction keys 43, clerks keys 44, and department key 45.

Since all of the amount key banks are of the same construction and serve to control related difl'erential devices in the same way, it will be necessary to describe only one bank in detail. As best shown in Fig. 2, each bank of key is constructed and arranged as a separate unit reamovable as an entity together with certain associated latching and locking devices. For this purpose the main supporting structure for each bank comprises a channel member 46 (Figs. 1, 2, and 4) which is suitably slotted in its upper and lower overturned portion to receive the stems of the nine keys in the bank. Springs 41 (Fig. 4) connected between hooks 48 on the keys and studs 49 extending from the inner side of the web of the channel serve to hold the keys normally elevated. Usual or suitable means are provided to lock depressed keys down, to release them at will or when they have performed their function, to prevent the depression of more than one amount key in a bank, a zero stop I I9, I is provided releasable by an amount key, and other usual and necessary means are provided.

Difierential mechanism r The differential mechanism which is controlled with suitable elongated slots I32 adapted to cooperate with the supporting bars I3 and H which are secured at their opposite ends to the side frames 9 and I0;

Comb plates I33 secured to the supporting bars serve to maintain the'members in true vertical planes and also to hold them in the desired spaced relation. Each slide member is adapted to receive a variable movement up to nine steps and the two are so inter-related that if one receives the full nine steps of'movement the other will be held stationary and at all times the sum of the movements of the two members, disregarding the direction of movement, will be nine steps- For the purpose of controlling the extent of movement of the members by the depression of a key the member I is provided with a series of nine projections I34 each having a square shoulder facing upwardly in the direction of movement of the member while the opposite face of each projection may be inclined to provide greater strength. Similarly the member I3 I is provided with nine projections I having square shoulders facing downwardly and toward the front. Alternate ones of the projections I 34 (Fig. 4) are offset or bent into a different plan from that of the member I30 itself and the remaining projections. So also alternate ones of the projections I35 are offset or bent out of the plane of the member I3I and in both instances the offset projections are bent away from the opposite member from the one on which they are formed. In this way the projections I34 and I35 are arranged in four separate rows. The lower end of the stem of each of the keys 42 is provided with a pair of projections I36 one of which projections is adapted to cooperate with a projection I34 on the member I30 and the other of which is adapted to cooperate with a projection I35 on member I3I. In order to take care'of the four positions, which the projections on the members may assume, the ends of the keys may be regarded as divided into four sections. The pair of projections on one key may be in the first and third sections while the pair of projections on the next key in the bani: will be in the second and fourth sections and so on for alternate keys. This permits alternate keys to cooperate with say a straight projection on one member and a bent projection on. the other while the remaining keys have just the opposite relation. .In this way the members are allowed to travel a maximum extent equal to almost double the key spacing.

Normally the member I30 is prevented from movement by the downwardly extending arm of the previously mentioned member I I6 (Fig. ,2) whose lug I20 cooperates with the uppermost projectionl34. When some key in the bank is depressed, however, this pivoted member, is rocked, as explained, and its lug is withdrawn from the projection at the'upper end of member I30. Upon'subsequent operation of the machine, as will bev explained, the member I30 is shifted upand to the rearuntil stopped by engagement of oneof its projections with thedepressedkey or by'engagement of the lower ends of the slots I32 with the supports I6 and IT. .The extent of movement of the member will be directly proportional to the value of the key depressed. Member I3I on the other hand is normally free to move. downwardly upon operations of the machine and if no. key in the bank has been depressed this memberwill movean extent equal to nine steps; At all times it willmove an extent which is the nines complementof the distance through which the member I30 is moved upward ly. This means that when the upper or nine key is depressed member I3I will be locked against any downward movement.

The means for driving the members I30 and I3I in the way explained comprises a differential gear construction (Figs, 2, l6 and 17) operated by a rock shaft I3'I. Forthis purpose there is secured to this shaft a pair of frames I 38, one

located to the right and the other beyond the left of the group of'members I30 and I3I. The frames consist preferably of a pair ofplate's the hubs I39 of which will besecured to the shaft as by pins I40. A pair of shafts I4I supported atopposite ends in these frame plates is providedand one of these carries a series of broad toothed pinions I42 loosely mounted thereon while the other carriesa similar series of pinions I43 in such a way that a pinion of each series is inter-geared with a pinion of the other series through 'theengagement of only a portion of the Width of theteeth, Loosely mounted on the operating shaft I3I' by means of hubs I44 are a plurality of pairs of adjacentgears I45 and I 46, each of the gears I45 being adapted to mesh with one of the pinions I42 and each of the gears I46 being adapted to mesh with one of the pinions I43. Each gear I45 isadapted to mesh directly with-teeth I4'I. formed on the underside of a corresponding member I30 while each gear I46 meshes with an idler I48 on a shaft I49 fixed in the side frames, each idler in turn meshing .with teeth I50 formed on the underside of a corresponding member I3 I Upon operations of the machine the shaft I3I .ls "rocked first clockwise (Figs. 2 andl?) and then counter-clockwise. clockwise movement of this shaft will tend to It will be apparent that cause the pinions I42 and I43 to carry the two sets of gears I45 and I45 clockwise about the shaft so that each gear I45 will tend to move its member I30 upwardly while each gear I46 through idler I48 will tend to move its member i3I downwardly. Now when one of the members is stopped as by engagement of one of the projections thereon with a depressed key its corresponding gear I45 r I46 will be arrested and the inter-meshed pinion, either I42 or I43, will be made to planetate about this gear and will cause a double movement of the remaining gear and member until the full clockwise movement of the shaft I31 is completed. Thus assuming that the 1 key were depressed in a particular bank both of the members I and I3I will be shifted a single step during the initial movement of shaft I31 while continued movement of the latter will cause pinion I42 to planetate about the gear I45 which has by this time become fixed.

The remaining pinion I43 will then be rotated counter-clockwise on its shaft MI in addition to partaking of the bodily movement of the latter so the gear I46, idler I48 and member I3I will be shifted at double speed to take up the remaining clockwise movement of shaft I31. On the return movement of shaft I31 it will be obvious that the parts will be restored to the normal position shown in Fig. 2.

The means for rocking the shaft I31 as explained, as best shown in Fig. 3, comprises a pinion I5I secured to this shaft toward its left end and adapted to be engaged by segment teeth I52 carried by a plate I53 pivoted on a stud I54. This plate is provided with a roller I55 which cooperates with a cam I56 (Fig. 14) that forms a part of a unit that is secured to the drive shaft 31. The groove I51 in the cam I56 is so formed as to rock the plate I53 and shaft as required it being noted that a considerable dwell portion is provided before, intermediate and after the two movements of the plate in order to allow time for the performance of other necessary functions.

Control of actuators As has already been briefly explained, the present machine is provided with a large number of totalizers and these are arranged in banks each extending from front to rear of the machine and the several bank being horizontally arranged across a considerable portion of the width of the machine. This means that a set of actuators must be provided for each bank of totalizer and each set must contain an actuator corresponding to each denominational order of the keyboard. Due to the necessity of using these actuators in connection with the printing and indicating of totals, as will be explained more fully hereinafter, one set must be provided for each bank of item counters as well. In the illustrative machine this calls for eight actuators corresponding to each denomination of the keyboard, each actuator being capable of operating a particular order of an of the totalizers or counters in a particular bank. As a convenient means of coordinating the eight actuators which must partake of the same movement under the control of one of the banks of keys a shaft I58 (Fig. 2) is provided for each denominational order. There are, therefore, as many of these shafts extending across the machine between the pair of side frames as there are banks of amount keys on the keyboard and assho'wn there is one additional similar shaft I65, making nine in all, for the purpose of taking totals from an extra or of various constructions.

overflow order provided in each totalizer as will be explained.

The connection for driving the shafts I58 to differential extents comprise pinions I59 ecured one to each shaft and each meshing with a rack I60 (Fig. 2) supported bysuitable cross bars I8, I9, and 20, each in turn meshing with a. gear I6I loosely m'c-untcd on the shaft 31. These gears I6I are of extra width and are adapted to transinit the movement of the members I30 to the racks I30. For the purpose of driving the actuators I62 of which, as stated, there are eight for each denominational order, each shaft I58 is provided with seven pinions I63 secured thereto. The eighth actuator is driven directly by the pinion I59 which, as before mentioned, serves to transmit the movement of the rack I60 to the shaft.

For printing and indicating totals from the extra or overflow order of the totaiizers and counters, eight actuators are also provided. One of these actuators has an extra shoulder I66 (Fig. 2) which is adapted to cooperate with an element that is stationary on item operations and thus confines the entire inter-connected group of actuators in normal position when not taking totals, as will later be explained. The actuators for this denominational order mesh with related pinions I59 and I63 secured to the shaft I65, the pinion I59 meshing with the corresponding rack I69. This rack cooperates with a gear loose on the shaft 31 similar to gears I8I: this gear then drives a special member I30 not associated with any key bank. This member I30 then meshes with a gear I45I (Fig. 16) similar to those related to the banks of keys and loose on shaft I31. The gear I 5I then meshes with a gear I48I similar to the idler gears I48 related to the key banks and mounted on fixed shaft I49. That portion of gear I48I which is out of the plane of gear I45I then drives a slide II29 similar to the slides I3I, the resultant movement being in the proper downward and forward direction as required for the indicator positioning mechanism to be hereinafter described.

As will be more fully explained in connection with the construction of the totalizers each order of each of the latter is restricted to two thicknesses of relatively thin metal, say fifty thousandths of an inch thick. The actuators which are of the same thickness are spaced an amount substantially equal to their thickness. That is to say the group of actuators I92 that are related to one bank of totalizers will b separated from each other by only about fifty thousandths of an inch. The groups of actuators related to different banks of totalizers are spaced a greater distance.

Tota'lizers As has been stated hereinbefore the illustrative machine is equipped with forty-two totalize'rs A detailed description thereof is not deemed necessary for the purposes of this application. Their construction and that of the means for their selection may be of an known or suitable type, it being understood that in total taking the totalizers serve to control at least a part of the differential mechanism in accordance with a function of the amount on the totalizer, which mechanism serves to set the printing mechanism and indicator mechanism to print and indicate said total.

Special key banks In addition to the banks of amount keys the machine, as already suggested, is provided with several banks of special keys, there being three such banks shown (Fig. 7). These are devoted to the designation of clerks, transactions and departments and are indicated respectively by the characters 44, '43, and 45.

The construction and arrangement of these keys in each bank ar substantially the same as for the amount keys. Thus, there is provided for each bank a detent bar 52 (Fig. 8)

,mit the full depression of only a single key in a bank are also provided. The parts, furthermore, are mounted in a channel frame 45 which serves to establish a unit assembly of these parts. Upon operation of the main operating mechanism the plate will be rocked an additional step by means of the rod 16 carried by arms ll secured to the shaft 72 to permit the detent bar 52 to move still further toward the rear so that the beaks '53 may completely lock the keys in whatever position they may happen to be. Toward the end of an operation of the machine the cross rod lB engages a shoulder 79 on the detent bar and restores it to normal thereby releasing the keys.

The differential mechanism controlled by the special banks of keys is required to take effect much sooner than the amount differentials due to the control of the special keys over the totalnot provided with the projections and cut out portions to be found at the ends of the amount keys but are preferably fiat across the bottom ends. Anothcr feature of distinction between these banks and the amount banks is that no z'ero stop are provided for the special keys. This is due to the fact that certain springs are provided to maintain the parts in normal and the depression of some key in each of these banks is ,always required to release the machine, except in totaling operations, as will be explained.

Each of the special key banks (Fig. 8) is provided with a pair of slides 366 (Fig. 13) and 36'! (Fig. 12) having a series of slots 363 and 399, respectively. The five lowermost keys (Fig. 8) are adapted to cooperate directly with the slots 368 in the slide 386 and these slots have one edge of graded inclination and one edge straight. The construction is such that the lowermost key will shift the slide three steps downwardly while the next key will shift it two steps downwardly and the third key from the bottom will shift the slide only one step downwardly. On the other hand the fourth and fifth keys will move the slide upwardly one and two steps respectively.

The four uppermost keys in the bank cooperate with the slots 359 in the slide 301, and these slots are so arranged that the slide is moved upwardly two steps by the uppermost key, and one and onehalf steps by the next key, While the third key from the top shifts the slide downwardly two steps and the fourth key moves it two and onehalf steps in this direction. A rack portion 310 on the slide 33'! meshes with a pinion 3| I mounted loosely on a reduced portion of the shaft I31. Secured to this pinion is a larger gear 3|2 of twice thediameter of the pinion and this gear meshes with rack. teeth 313 formed on the slide 306. It will be understood therefore that any movement of the slide 361 will be transmitted to the slide 336 and in such a way as to cause twice as great a movement of the latter slide. Considering the movements of the slides, as already mentioned, it will be apparent that the slide 306 -'may be shifted to any one of five different extents downwardly or any one of four different extentsupwardly depending upon the key de- "pressed, the greater movements in either direction being brought about indirectly through the slide 367 and the gear and pinion connection. A

spring 3M extending between 2. lug 315 depending from a slide 3l6 (Fig. 9) and a lug 3H depending from a slide 3I8 (Fig. 10) serves to maintain these parts normally in the position shown in Fig. 8. For this purpose the two centralizing slides are provided with cut-out portions 3i3 forming shoulders 320 which engage opposite sides of a pin 32] on the slide 36". The supporting slots 322 cooperating with the bars l5 serve to limit the movement of the slides under influence of the spring 3| 4. Due to the two to one relation between the movements of the two slides any movement of the slides from normal will tend to stretch the'spring 3M and this will opposed by the spring itself.

A stud 323 is mounted on the slide and carried thereby to any one of nine different positions, five down and four up from the normal. This positioning of the stud takes place at once upon the depression of one of the special keys and prior to any movement of the main operating mechanism. Now as the operating mechanism begins to operate the shaft will be rocked by connections which will presently be described. Arms 325 secured to this shaft carry a rod 326 and rollers 321 which cooperate with a slot 328 in a plate 329 pivoted to the upper end of a bell-crank member 330. A V notch 33! in the plate is adapted to cooperate wi h the stud 323 as the plate is rocked and since the stud is held firmly in one of its nine positions of adjustment the V camrning notch will force the plate together with its own pivot either to the right or left an amount corresponding to the key depressed. This means that the bell-crank memher 333 will be rocked about the fixed pivot 332 to an extent depending upon the key which has been depressed.

A special plate 333 (Fig. 11) having a series of slots 334 which are in direct alinement with the several keys of a bank serves to guide the lower ends of the keys as they are depressed and holds them steady. These slots are wide at their upper ends but taper down to the width of the keys at their lower ends. The slots in the slides 306 and 301 likewise converge toward the bottom into a narrower straight sided alining portion and a similarconstruction is provided for the V notch 33L Any suitable means are provided for operating the rock shaft 324 to rock the plates 329 at the beginning of an operation of the machine.

Teeth 34! formed on an extension at the lower end of the bell-crank member 330 (Fig. 8) mesh with a rack slide 342 which is mounted on the cross-bars l8 and I9 that support the amount racks I653. Comb plates 343 serve to maintain the proper position and alinement of ti Rack teeth 344 on the undersides of slides 342 are adapted to mesh with a p 345, 346 or 341, secured respectively to shaf 3'53; 349 and 356, similar to the amount denominational shafts 158. It willbe understood thereg fore, that a shaft is provided for each bank of special keys so that, thereby totalizers in as many of the banks of totalizers as may be selected for item entry and total printing and indicating.

Item counters Mention has already been made of the fact that the present machine has, for purposes of illustration, been provided with a number of item counters which are adapted to segregate the entries and keep an accurate count of the number of entries of certain specified types, i. e., those representing actual sales, related to each of the special keys in the three banks. For this purpose twenty-seven counters are required and these are arranged in three banks of nine each. Three additional counters are also provided for the purpose of keeping count of the grand total number of sales made by the entire group of clerks and the total number of operations of the machine effected under control of cashiers I and 2 respectively.

It is only necessary to operate of the nine counters of a group during an operation of the machine and this may be done by any suitable means.

Totaling controls In the foregoing sections the operation of the totalizers and counters has been considered only from the standpoint of item entering which, as explained, may involve either adding or subtracting upon certain selected ones. Provision is also made for the taking of totals from any one of the totalizers or counters in such a way that the amount standing thereon may be determined by means of both indicating and recording mechanisms and furthermore the operation may or may not involve resetting as desired.

For the purpose of determining the condition of the machine as between item entering and total taking a pair of levers X and Y (Figs. 3 and 6) are provided and these are normally locked in their item entering or adding positions by passing thru openings in the cover 21 which is provided with a lock 413 so that only authorized persons carrying the necessary key may determine totals. Movement of one of the levers X or Y will only condition the machine for what is commonly known as a sub-total or read total and will not bring about resetting of the selected totalizer or counter. Whenever it is desired to reset the totalizer or counter selected for totaling it is necessary also to turn the reset lock 474 (Fig. 6) prior to an operation of the main operating mechanism. In order to restrict resetting operations to special parties such as auditors or the like the lock 414 is preferably designed to receive a key different from that required to unlock the levers X and Y. Thus while a manager or perhaps a cashier may be permitted to take sub-totals the operation of resetting is under the control of only the proprietor or a trusted auditor.

The necessity for a large number of totaling positions and hence the desirability of employing a plurality of levers will be apparent when it is considered that there are a large number of totalizers as to which there is no direct means of selection. For example, the selection of any one of the adding and subtracting totalizers depends upon several controlling factors, each of which tends to control the selection of other totalizers as well so that the mere conditioning of the machine for totals is not enough when these totalizers are to be selected. Within the purview of the present invention any suitable means for this purpose may be utilized.

Indicating mechanism The indicating mechanism forming the subject of the present invention comprises means for displaying in large visual characters the amount of a transaction together with the designation of the nature of the transaction and the clerk and department involved. For this purpose iudicator tablets are provided andv adapted to be exposed both at the front and at the rear of the machine.

The indicator tablets I086 are all mounted near the top of the rear portion of the machine and are displayed, front and rear, thru glass window I081 provided in the casing (Fig. 2). There are eight banks of amount keys and each of said banks is represented by two sets of tablets, one set arranged to be read from the front of the machine and the other set being arranged to be read from the rear both being in correct denominational order. There are also two sets of tablets one front and one rear, to indicate the amounts standing on the overflow wheels of the totalizers. These overflow sets will only be required in indicating totals to take care of the extra order beyond the key capacity which is provided in each tctalizer and counter as previously mentioned. The three special banks 0! keys are, as stated, similarly represented by tablets, each of said banks having two sets of tablets, for front and rear indication. These special tablets need not be arranged to present the same order of appearance to the operator when viewed from the front as when viewed by the customer from the rear, as is the case with the amount tablets since their relative order is immaterial. For this reason like sets of special character tablets may be directly alined for front and rear indication. The amount sets of indicators howevers, for the units or pennies tablets are alined from front to rear with the overflow or millions of dollars tablets (Fig. 21) both being lifted by .3 a common lifting plate I 088. Similarly the dimes set of tablets for the frontwill be alined with the hundreds of thousands of dollars tablets for the rear and so on. It will be clear that the hundreds of dollars tablets, due to their central position among the amount indicators, will be downwardly extending finger I089 with an offset portion of finger I990 used in lifting the tablet as will be explaine It is also provided with another plain finger I03I used as a guide. The offset portions I090 extend varying :li ances, front and rear, from the plane of the tablets, the arrangement being such that e" ch of the ten tablets comprising a set has a different plane for the offset finger (Fig. 21), and the ends of the ten offsets are spaced at equal intervals. The transaction tablets I092 21) and the department tablets I093 are slightly wider than the amount tablets I086 and clerks tablets !094 since a proper designation of each of these requires several letters.

A compartment or rectangular box (Fig. 21) is provided for each set of tablets. The series of boxes for the front and the rear indicators are formed in the same way by means of plates I000 and I096 which are secured to the side frames 9 and I0, and are spaced suificiently to provide for the thickness of an entire group of ten tablets. Partitions I091 serve to divide the two large boxes for the front and the rear indicators into smaller compartments which confine and guide the indicators of a single group. The inner plates may be useful furthermore for advertisement display purposes, the portion behind the raised tablets being visible during a portion of the operation of the machine. The portion I088 (Fig. 1) of the indicator space to the right of the groups of tablets may be provided with advertising matter either on the plate I096 or directly on the glass I081.

Between the two main boxes which guide and confine the indicators are a series of lifting plates I088 (Figs. 20 and 21) slidably mounted on bars 22 and 23 (Fig. 20) extending between the side frames, and guided and held in position by means of comb plates I099 secured to the bars. These lifting plates I088, each of which is common to a front and a rear group of tablets, have rack portions H in engagement with the teeth of pinions IIOI which are secured to a shaft I I02. On a portion of shaft H02 (Fig. 3) extending beyond the left side frame 0 is secured another pinion H03. In mesh with the latter is an operating rack slide I I04 guided by extensions of the bars 22 and 23 as well as by a guide stud I I05 and comb H08 at the lower end. The operating rack H04 has two rack portions, one portion H01 being in mesh with the pinion H03 and the other rack portion II 08 being in mesh with a gear I I09. This gear I I09 which is loosely mounted on a stud IHO extending from the side frame 0 has secured to it a smaller gear HH. The purpose of this double gear construction is to produce a greater movement of the rack slide I I04 than is imparted to the small gear IIII by means of the segment 524. It will be recalled that this segment which is pivoted at III 2 has a roller 523 cooperating with a groove 52'! (Fig. 14) in the disk I56. The groove 52'! is so designed that at the start of the operation of the machine, operating rack slide I I04 is lowered, at the middle of the operation it is raised slightly and toward the end of the operation it is raised fully'to its normal position. Through the shaft H02 and the pinions -I IOI the movement of slide I I04 is imparted to the lifting plates I088. I

Each lifting plate I088, for the amount tablet I086, has mounted thereon two independently movable selecting sides HI3 and IH4 (Figs. 20 and 21). Two double headed studs HIS carried by the lifting plate I083 cooperate with guide slots IHG in each of the selecting slides Hi3 and HI4. Both slides are urged to the left (Fig. 20) by a pair of springs HH connected betewen a finger I I I8 on each of the slides and studs Hi9 (m the lifting plate I088. 0n each side of the lifting plate I088 there is pivoted on a stud H20 a positioning pawl or detent H2I. These pawls normally have their pointed ends H22 engaged in one of a series of notches H23 in the corresponding slides I I I 3 and I I I4, being urged in this direction by means of tension spring I I24. Thus the slidesare held in any set position, by pawls .H2I, against the pull of springs I H7. The selecting slide H'I4 which is on the right side of the plate I 088 (Fig. 21) has an overturned lug H25 adapted to cooperate with the offset portions I090 of the front tablets I086 to raise the latter, and this lug also serves as a means for positioning the slide as will later be explained. The

left hand selecting slide 4H3 has two overturned lugs H26 and H22; the lug H26 serves as a p0 sitioning surface, as will be explained, While the other lug H21 cooperates with the offset portions I090 of the rear tablets to lift the latter.

For the six sets of tablets related to the three banks of special keys, only the left hand selecting slide II I3 need be provided on each lifting plate I083 since this slide may be adapted to lift both a front and a rear tablet which will always correspond. In the case of these three slides the lugs H26 cooperate with the fronttablets (Fig. 21) as well as with the positioning means while lugs I I2! cooperate with the rear tablets to lift the latter.

From the above description it is obvious that every selecting slide II I3 or HI4 can independently lift and lower any one of its related set of tablets. It will be apparent also that after permitting the lowering of the previously raised tablets the selecting slides must be released to per-v mit them to assume their normal positions so that; they may then be shifted to new positions to lift other tablets representing the new item or they may, if desired, be shifted directly to their new positions The mechanism for positioning the selecting slides will now be described.

A pin H28 (Figs. 2 and in the upper end of each of the complemental slides vI.3I,'as well as the overflow order slide H29 (Fig. 22), extends into a slot I I30 (Fig. 20) in the upwardly extending arm Hill of a segment I I32. These segments H32 are loosely mounted on a shaft H33 supported by the side frames 9 and I0, Three additional segments I I34 positioned by the special key mechanism (Fig. 8) are also mounted on shaft H33. For positioning these special segments a roller H35 (Fig. 8) on each of the segments 330 extends thru a cam slot H36 in one of a series of bell cranks H31. The three bell cranks H31 are loosely mounted on a shaft H38 which is mounted within the frame of the machine. Each bell crank H31 has an arm H39 overlapping anarm II 40 on a corresponding one of the segments H34 and has a pin and slot connection with this. arm. The cam. slot I I36 is so shaped that the arm H33 may be rocked clockwise to any one of nine positions upon depression of .a selected one of the special keys and the subsequent operation of the machine which rocks the specialkey differential segment 330. It will be understood that the segments H32 are rocked counter-clockwise under control of the complemental slides I3I either in accordance with the keys depressed in item entering operations, or in accordance with the values standing on the totalizer or counter wheels selected during totaling operations. The segments H34 are only rocked in accordance with the special keys depressed.

The teeth II4I (Fig. 20) on the segmentsl I32 and H34 mesh with pinions H42 secured to one or another of two series of nested tubes mounted on shafts H43 and H44. Two shafts and sets of tubes are provided in order to simplify th tubing construction. Other pinions 1 I45, on the tubes at the proper points, mesh with rack teeth H46 or positioning slides H41 mounted by means of slots H48 on the cross bar 2| and held in position by combs H00 and H5]. Each positioning slide I14] has .a stud H52 which cooperates with one of the lugs H26 or H25 on a related selecting slide H13 or 1H4, when the latter together with its carrier plate I088 is lowered, to position the slide in accordance with the movements of its segment H32 or H34. The upper surface of a stop shoulder 1:153 (Fig. 20) on the positio ing slide H41 is adapted to engage a pin H54 on the related pawl II2I when the lifting plate I088 is in its lowermost position. The point H22 of the pawl is at this time held out of engagement with the ratchet teeth H23 so that the corresponding slide III3 or IH4 will be released, letting spring III1 pull it to the left (Fig. until it is stopped by the stud H52 on the positioning slide H41.

As shown in Fig. 22 the tubes for the amount tablets have secured to each a pinion H42 in mesh with the related segment H32, and two pinions I I45 in mesh with two different positioning slides H41. One of these slides positions a selecting slide III3 for controlling the rear indication and the other positions a slide HI4 for controlling the front indication. Thus the units of cents tube H is mounted directly on the shaft H43 and has its pinions H45 near the extreme ends of the tubes the left hand pinion ;a

being provided to control the rear indication and the right hand pinion being provided to control the front indication. Just to the left of the right hand pinion H45 will be found the pinion H42 for positioning the tube. The units of dollars tube I I56, the hundreds of dollars tube I I51, the tens of thousand dollars tube H58 and the millions of dollars or overflow bank tube H59 are also mounted on the shaft H43 in nested formation while the tens of cents tube H60, the tens of dollars tube H6I, the thousands of dollars tube H62 and the hundreds of thousand dollars tube H63 are mounted in nested formation on the shaft II 44. It will be apparent that the order of arrangement of the tubes on the pair of shafts H43 and H44 depends on the necessary location of the pinions H42 and H45 as determined respectively by the location of the controlling key banks, and the positions of the corresponding indicators with their related slides III3 and Hi4. It has been found that with the arrangement of the tubes and the spacing of other parts as shown in Fig. 20 the pinions may be located as required without offsetting more than one of the connecting pieces H32 between the key set differential slides I3I and their corresponding pinions H42, and that connection need only be slightly offset. The offset connection is to the pinion on tube I I63 (Fig. 22).

The tubes for the special tablets (Fig. 22) have only one pinion H42 on each in mesh with the related segments H34 and one pinion H45 on each in mesh with a positioning slide H41. This single positioning slide H41 for each positions a selecting slide III3 which, as previously explained, lifts tablets for both front and rear indication of the special characters. The transaction tube H64 and the department tube H65 are mounted on the shaft H43 while the clerks tube H66 is mounted on the shaft H44. A general discussion of the operating sequence of the indicator parts described above will now be given.

At th very beginning of the operation of the machine the lifting plates I088 (Fig. 20) are lowered, and carry with them the previously raised indicator tablets, the final portion of this movement resulting in the rocking of the pawls II 2| by engagement of pins H54, with the extensions rlnllihoulders H53 to release the slides III3 and treme left (Fig. 20) by the springs I l"! and are now ready to be again positioned to select a new tablet. For this purpose the special key differential mechanism (Fig. 8) acts first to effect the These slides are then restored to the ex-' positioning of the selecting slides III3 by means of the segments H34, the tubes H64, H65 and H66, (Fig. 22) and the positioning slides H41 on which the pins H52 are adapted to cooperate with the bent ends of the slide I I I3. The amount selecting slides I I I3 and I I I4 are next positioned, by virtue of the movement of the complementary lides I3I upon the operation of the differential mechanism (Figs. 2 and 20) which is entirely positive in action in item entering operations and driven by spring levers 548 (Fig. 2) in totaling operations. The connections from the complementary slides for this purpose include th segments H32, the related tubes on the shafts H43 and H44, and the positioning slides H41 with their pins H52 adapted to engage the bent ends of the selecting slides.

The selecting slides I I I3 and HI4 being positioned in this manner are now ready to raise the new tablets. It will be observed that these slides would not remain in their new positions if the lifting plates I088 were kept in their lowermost positions while the complementary slides I3I are being returned to their initial positions since the detents H22 would still be held inactive. For this reason the plates I088 are lifted slightly at about the midpoint in the operation of the machine after the complementary slides I3I have partaken of their full movement and are still stationary. This movement of the plates is sufliclent to permit the springs I I24 (Fig. 20) to rock the pawls H2I and lower the detent points H22 into the adjacent notches H23 of the selecting slides III3 and IH4, thus holding the slides in their adjusted positions in spite of the subsequent return movement of the positioning slides H41 during the last half of the operation of the machine. Toward the very end of the operation the plates I088 are lifted further into their normal positions so that the lugs H25, H26 and H21 on the selecting slides III3 and HI4 cooperating with the offset portions I090 of the selected tablets will lift the latter to their exposed positions.

It will be understood that the arrangement of the tablets in each group will be such that the offset portions I000 will fall in appropriate sequence to b selected properly by the lugs H25, H26 and H21. In connection with the amount indicators this necessitates consideration of the fact that for those controlled by the key banks the segments I I32 and slides I I41 will be adjusted in accordance with the complements of the keys depressed or of the amounts on the wheels whereas for the overflow groups of indicators the control over the segment I I32 and slides H41 will be from an element which moves in direct correspondence with the amount on the overflow wheel. This obviously will call for a different order of the indicators in th overflow groups from that in the other amount groups.

Preferably the surfaces I I53 on the positioning slides H41 are of sufficient length to cooperate with the pins I I54 of the detent pawls regardless of the extent to which the slides are shifted. However, it will be observed that if the surfaces are too short for this purpose the mechanism will still function properly. The pawls H2I will be permitted to rock into active engagement with the ratchet teeth I I23 earlier than otherwise, i. e. whenever the slides H41 are given the larger extents of movement as for example more than five steps, however the further movement of the selecting slides I I I3 and I I I4 will not be interfered with but will result merely in an idle ratcheting action between the pawls and the teeth H23." 

